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HP Water Vent, Drain Nozzle (High Pressure Water Vent and Drain Nozzle) is a specialized piping component designed for venting trapped gases and draining liquids from high-pressure water systems. It serves as a critical fitting for system commissioning, daily operation, routine maintenance and shutdown procedures across multiple industrial sectors. This nozzle supports consistent system performance and reduces operational risks for business buyers in heat exchange, hydrogen cooling, LNG processing, power generation and petrochemical fields.
This nozzle removes trapped air from enclosed high-pressure water circuits, releases accumulated gases during system startup processes, and prevents the formation of air pockets inside pipelines and pressure vessels. By eliminating gas blockages, it supports stable heat transfer efficiency in heat exchanger systems and reduces flow resistance inside piping networks.
It provides dedicated drain points to discharge retained water during system shutdown procedures, remove condensate from industrial cooling circuits, and clear process residue from pipelines and equipment. This function supports convenient maintenance and overhaul operations, and cuts down liquid retention time inside low-point positions of piping systems.
The nozzle mitigates pressure fluctuations caused by trapped gas or stagnant liquid, and lowers corrosion risks triggered by long-term liquid retention in pipeline dead zones. It contributes to stable system operation across different load conditions and extends the service cycle of connected piping and equipment.
Category | Details |
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Standard Size Range | NPS 1/2" to 48" DN15 to DN1200 |
Wall Thickness | SCH10S SCH40S SCH80S SCH160 XXS |
Connection Types | Butt Weld (BW) Socket Weld (SW) Threaded (NPT) Flanged Custom Design |
Nozzles can be manufactured from a wide range of metallic materials to adapt to different pressure, temperature and corrosion conditions:
Austenitic Stainless Steel: including 304, 304L, 304H, 316L, 316Ti, 321, 347, 310S and corresponding standard grades
Super Austenitic Stainless Steel: including N08904(904L), S31254, N08367 and other high-alloy grades
Super Duplex Steel: including S32304, S32205, S32750, S32760 with matching standard designations
Nickel Alloy Steel: covering Alloy C series, Alloy 600, Alloy 625, Alloy 800 series, Alloy 825, Alloy 400 and other nickel-based grades
Titanium & Titanium Alloy: GR1, GR2, GR3, GR4, GR5, GR7, GR9, GR11, GR12
Additional options include Low Temp. Steel, Alloy Steel, Pipeline Steel and Carbon Steel per project requirements.
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The nozzles are engineered for installation in high-pressure water and cooling systems, with pressure ratings matching the selected wall thickness schedules and material mechanical properties. They adapt to the pressure requirements of most industrial high-pressure water circuits.
Suitable for multiple common working media including cooling water, deionized water, seawater and process water systems. Material selection can be adjusted to match the specific corrosion environment of each project, to fit different industrial application conditions.
Products can be produced according to customer drawings and specific project specifications, to fit unique piping layouts, installation dimensions and system performance requirements.
Selected industrial metallic materials support long-term service under high-pressure, corrosive or extreme temperature working conditions, matching the demands of demanding industrial operating environments.
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To ensure consistent product performance and compliance with project specifications, a full set of inspection procedures are implemented throughout the production process.
Raw material inspection includes PMI testing, chemical composition analysis and material traceability verification, to confirm raw materials match ordered material grades. Dimensional inspection covers outside diameter, inside diameter, length, wall thickness, bevel angle and concentricity.
Mechanical testing includes tensile test and hardness test, with impact test available when required by project specifications. Non-destructive testing options include PT (Liquid Penetrant Testing), UT (Ultrasonic Testing), RT (Radiographic Testing) and MPI when applicable.
Surface inspection covers visual check, surface finish inspection, and pickling and passivation inspection for stainless steel products. Each product can be supplied with EN10204 3.1 Certificate, along with inspection report, dimensional report and NDT report as required for commercial procurement.
Applied in hydrogen energy systems including hydrogen refueling stations and hydrogen pre-cooling heat exchangers; also used in LNG liquefaction plants and LNG regasification facilities.
Installed in Printed Circuit Heat Exchangers (PCHE), diffusion bonded heat exchangers, microchannel heat exchangers (MCHE) and other heat transfer equipment. Also used in boiler systems, steam and water circuits, and heat recovery systems in power generation facilities.
Used in process cooling systems and water treatment equipment in petrochemical plants, as well as offshore platforms and FPSO systems. It also fits for chemical plants, refineries and desalination plants in industrial process sectors.
We provide a full range of metallic materials including austenitic stainless steel, super austenitic stainless steel, super duplex steel, nickel alloy steel, titanium alloy, low temperature steel, alloy steel, pipeline steel and carbon steel. Specific grades can be confirmed based on project working conditions.
Standard connection types include Butt Weld (BW), Socket Weld (SW), Threaded (NPT) and Flanged. Custom connection designs are also available based on customer provided drawings and installation requirements.
EN10204 3.1 Certificate is available as standard documentation. We can also supply corresponding inspection reports, dimensional reports and NDT reports according to specific commercial procurement requirements.
Yes, we produce vent and drain nozzles according to customer drawings and project specifications, to adapt to specific size, pressure rating and installation requirements for different industrial projects.
For project-specific requirements of HP Water Vent and Drain Nozzles, business buyers can provide design drawings and working condition parameters for customized solution confirmation. All production and quality control processes follow international industrial standards to match the needs of different commercial and industrial applications.
